6720330 has 16 divisors (see below), whose sum is σ = 16128864. Its totient is φ = 1792080.

The previous prime is 6720323. The next prime is 6720331. The reversal of 6720330 is 330276.

It is a junction number, because it is equal to n+sod(n) for n = 6720297 and 6720306.

It is not an unprimeable number, because it can be changed into a prime (6720331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111976 + ... + 112035.

It is an arithmetic number, because the mean of its divisors is an integer number (1008054).

Almost surely, 2^6720330 is an apocalyptic number.

6720330 is an abundant number, since it is smaller than the sum of its proper divisors (9408534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6720330 is a wasteful number, since it uses less digits than its factorization.

6720330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224021.

The product of its (nonzero) digits is 756, while the sum is 21.

The square root of 6720330 is about 2592.3599287136. The cubic root of 6720330 is about 188.7108481284.

The spelling of 6720330 in words is "six million, seven hundred twenty thousand, three hundred thirty".